./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 435b3fa8073a80dcd9b8b69819909b6031007c35574ec244127e6237bed3be57 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:59:43,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:59:43,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:59:44,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:59:44,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:59:44,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:59:44,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:59:44,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:59:44,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:59:44,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:59:44,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:59:44,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:59:44,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:59:44,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:59:44,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:59:44,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:59:44,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:59:44,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:59:44,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:59:44,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:59:44,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:59:44,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:59:44,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:59:44,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:59:44,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:59:44,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:59:44,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:59:44,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:59:44,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:59:44,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:59:44,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:59:44,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:59:44,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:59:44,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:59:44,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:59:44,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:59:44,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:59:44,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:59:44,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:59:44,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:59:44,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:59:44,054 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:59:44,088 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:59:44,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:59:44,088 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:59:44,088 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:59:44,089 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:59:44,089 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:59:44,089 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:59:44,089 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:59:44,090 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:59:44,090 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:59:44,101 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:59:44,102 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:59:44,102 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:59:44,102 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:59:44,102 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:59:44,102 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:59:44,102 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:59:44,103 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:59:44,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:59:44,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:59:44,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:59:44,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:59:44,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:59:44,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:59:44,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:59:44,106 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:59:44,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:59:44,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:59:44,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:59:44,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:59:44,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:59:44,107 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:59:44,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:59:44,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:59:44,108 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:59:44,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:59:44,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:59:44,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:59:44,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 435b3fa8073a80dcd9b8b69819909b6031007c35574ec244127e6237bed3be57 [2022-11-19 06:59:44,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:59:44,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:59:44,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:59:44,400 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:59:44,401 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:59:44,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2022-11-19 06:59:44,463 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/bin/utaipan-I9t0OCRTmS/data/04eb52c7b/5f965b9791154513a05b0798206989af/FLAG16f018453 [2022-11-19 06:59:45,510 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:59:45,510 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2022-11-19 06:59:45,598 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/bin/utaipan-I9t0OCRTmS/data/04eb52c7b/5f965b9791154513a05b0798206989af/FLAG16f018453 [2022-11-19 06:59:45,930 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/bin/utaipan-I9t0OCRTmS/data/04eb52c7b/5f965b9791154513a05b0798206989af [2022-11-19 06:59:45,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:59:45,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:59:45,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:59:45,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:59:45,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:59:45,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:59:45" (1/1) ... [2022-11-19 06:59:45,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7494fb61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:45, skipping insertion in model container [2022-11-19 06:59:45,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:59:45" (1/1) ... [2022-11-19 06:59:45,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:59:46,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:59:50,897 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491234,491247] [2022-11-19 06:59:50,902 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491403,491416] [2022-11-19 06:59:50,902 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491570,491583] [2022-11-19 06:59:50,903 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491738,491751] [2022-11-19 06:59:50,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:59:50,968 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:59:51,552 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491234,491247] [2022-11-19 06:59:51,553 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491403,491416] [2022-11-19 06:59:51,553 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491570,491583] [2022-11-19 06:59:51,553 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i[491738,491751] [2022-11-19 06:59:51,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:59:51,842 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:59:51,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:51 WrapperNode [2022-11-19 06:59:51,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:59:51,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:59:51,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:59:51,846 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:59:51,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:51" (1/1) ... [2022-11-19 06:59:52,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:51" (1/1) ... [2022-11-19 06:59:52,453 INFO L138 Inliner]: procedures = 567, calls = 5350, calls flagged for inlining = 289, calls inlined = 261, statements flattened = 11740 [2022-11-19 06:59:52,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:59:52,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:59:52,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:59:52,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:59:52,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:51" (1/1) ... [2022-11-19 06:59:52,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:51" (1/1) ... [2022-11-19 06:59:52,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:51" (1/1) ... [2022-11-19 06:59:52,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:51" (1/1) ... [2022-11-19 06:59:52,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:51" (1/1) ... [2022-11-19 06:59:52,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:51" (1/1) ... [2022-11-19 06:59:52,943 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:51" (1/1) ... [2022-11-19 06:59:52,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:51" (1/1) ... [2022-11-19 06:59:53,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:59:53,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:59:53,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:59:53,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:59:53,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:51" (1/1) ... [2022-11-19 06:59:53,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:59:53,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:59:53,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:59:53,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a7d5748-6745-490d-bd91-8d242f3bc7f0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:59:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_up [2022-11-19 06:59:53,148 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_up [2022-11-19 06:59:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_media_task [2022-11-19 06:59:53,148 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_media_task [2022-11-19 06:59:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 06:59:53,149 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 06:59:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 06:59:53,149 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 06:59:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-19 06:59:53,149 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-19 06:59:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 06:59:53,150 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 06:59:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_select_media [2022-11-19 06:59:53,150 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_select_media [2022-11-19 06:59:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit_le [2022-11-19 06:59:53,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit_le [2022-11-19 06:59:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 06:59:53,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 06:59:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-19 06:59:53,151 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-19 06:59:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 06:59:53,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 06:59:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 06:59:53,152 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 06:59:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-19 06:59:53,152 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-19 06:59:53,153 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 06:59:53,153 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 06:59:53,153 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-19 06:59:53,153 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-19 06:59:53,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-11-19 06:59:53,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-11-19 06:59:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-19 06:59:53,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-19 06:59:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-19 06:59:53,154 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-19 06:59:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-19 06:59:53,155 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-19 06:59:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 06:59:53,155 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 06:59:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 06:59:53,156 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 06:59:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 06:59:53,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 06:59:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_do_nway [2022-11-19 06:59:53,156 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_do_nway [2022-11-19 06:59:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 06:59:53,157 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 06:59:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-19 06:59:53,157 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-19 06:59:53,157 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 06:59:53,157 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 06:59:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 06:59:53,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 06:59:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 06:59:53,158 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 06:59:53,158 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-19 06:59:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-19 06:59:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:59:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_wolopts [2022-11-19 06:59:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_wolopts [2022-11-19 06:59:53,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_61 [2022-11-19 06:59:53,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_61 [2022-11-19 06:59:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_resume [2022-11-19 06:59:53,160 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_resume [2022-11-19 06:59:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-19 06:59:53,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-19 06:59:53,160 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_interrupt [2022-11-19 06:59:53,161 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_interrupt [2022-11-19 06:59:53,161 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 06:59:53,161 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 06:59:53,161 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___3 [2022-11-19 06:59:53,161 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___3 [2022-11-19 06:59:53,162 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___1 [2022-11-19 06:59:53,162 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___1 [2022-11-19 06:59:53,162 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_media_task [2022-11-19 06:59:53,162 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_media_task [2022-11-19 06:59:53,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 06:59:53,162 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___5 [2022-11-19 06:59:53,163 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___5 [2022-11-19 06:59:53,163 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___4 [2022-11-19 06:59:53,163 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___4 [2022-11-19 06:59:53,163 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 06:59:53,163 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 06:59:53,164 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 06:59:53,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 06:59:53,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 06:59:53,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 06:59:53,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 06:59:53,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:59:53,165 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-19 06:59:53,165 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-19 06:59:53,165 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 06:59:53,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 06:59:53,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 06:59:53,166 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 06:59:53,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-19 06:59:53,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-19 06:59:53,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 06:59:53,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 06:59:53,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 06:59:53,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 06:59:53,167 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_timer [2022-11-19 06:59:53,167 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_timer [2022-11-19 06:59:53,167 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-19 06:59:53,167 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-19 06:59:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 06:59:53,168 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 06:59:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure poll_tulip [2022-11-19 06:59:53,168 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_tulip [2022-11-19 06:59:53,168 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_write [2022-11-19 06:59:53,169 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_write [2022-11-19 06:59:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 06:59:53,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 06:59:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:59:53,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 06:59:53,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 06:59:53,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 06:59:53,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 06:59:53,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-19 06:59:53,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-19 06:59:53,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-19 06:59:53,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-19 06:59:53,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:59:53,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 06:59:53,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 06:59:53,171 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 06:59:53,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 06:59:53,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:59:53,172 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_start_nway [2022-11-19 06:59:53,172 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_start_nway [2022-11-19 06:59:53,172 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-19 06:59:53,172 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-19 06:59:53,173 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-19 06:59:53,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-19 06:59:53,173 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 06:59:53,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 06:59:53,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_tulip_private [2022-11-19 06:59:53,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_tulip_private [2022-11-19 06:59:53,174 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-19 06:59:53,174 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-19 06:59:53,174 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-19 06:59:53,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-19 06:59:53,174 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 06:59:53,174 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 06:59:53,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 06:59:53,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 06:59:53,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mii_lock_of_tulip_private [2022-11-19 06:59:53,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mii_lock_of_tulip_private [2022-11-19 06:59:53,175 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 06:59:53,176 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 06:59:53,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_tulip_private [2022-11-19 06:59:53,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_tulip_private [2022-11-19 06:59:53,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:59:53,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:59:53,176 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_close [2022-11-19 06:59:53,177 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_close [2022-11-19 06:59:53,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 06:59:53,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 06:59:53,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 06:59:53,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 06:59:53,177 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2022-11-19 06:59:53,178 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2022-11-19 06:59:53,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 06:59:53,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 06:59:53,178 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-19 06:59:53,178 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-19 06:59:53,178 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_power_state [2022-11-19 06:59:53,179 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_power_state [2022-11-19 06:59:53,179 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 06:59:53,179 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 06:59:53,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2022-11-19 06:59:53,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2022-11-19 06:59:53,179 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2022-11-19 06:59:53,180 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2022-11-19 06:59:53,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-19 06:59:53,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-19 06:59:53,180 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_tx_timeout [2022-11-19 06:59:53,180 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_tx_timeout [2022-11-19 06:59:53,180 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_check_duplex [2022-11-19 06:59:53,181 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_check_duplex [2022-11-19 06:59:53,181 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-19 06:59:53,181 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-19 06:59:53,181 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2022-11-19 06:59:53,182 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2022-11-19 06:59:53,182 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2022-11-19 06:59:53,182 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2022-11-19 06:59:53,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 06:59:53,182 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 06:59:53,183 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 06:59:53,183 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 06:59:53,183 INFO L130 BoogieDeclarations]: Found specification of procedure comet_timer [2022-11-19 06:59:53,183 INFO L138 BoogieDeclarations]: Found implementation of procedure comet_timer [2022-11-19 06:59:53,183 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2022-11-19 06:59:53,183 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2022-11-19 06:59:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 06:59:53,184 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 06:59:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:59:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_read [2022-11-19 06:59:53,184 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_read [2022-11-19 06:59:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 06:59:53,185 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 06:59:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:59:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-19 06:59:53,185 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-19 06:59:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-19 06:59:53,185 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-19 06:59:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2022-11-19 06:59:53,186 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2022-11-19 06:59:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:59:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_down [2022-11-19 06:59:53,186 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_down [2022-11-19 06:59:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_stop_rxtx___2 [2022-11-19 06:59:53,187 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_stop_rxtx___2 [2022-11-19 06:59:53,187 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_remove_one [2022-11-19 06:59:53,187 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_remove_one [2022-11-19 06:59:53,187 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 06:59:53,187 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 06:59:53,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-19 06:59:53,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-19 06:59:53,188 INFO L130 BoogieDeclarations]: Found specification of procedure mxic_timer [2022-11-19 06:59:53,188 INFO L138 BoogieDeclarations]: Found implementation of procedure mxic_timer [2022-11-19 06:59:53,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 06:59:53,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 06:59:53,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-19 06:59:53,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-19 06:59:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_free_ring [2022-11-19 06:59:53,189 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_free_ring [2022-11-19 06:59:53,189 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-19 06:59:53,189 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-19 06:59:53,190 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_refill_rx [2022-11-19 06:59:53,190 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_refill_rx [2022-11-19 06:59:53,190 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_timer [2022-11-19 06:59:53,190 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_timer [2022-11-19 06:59:53,190 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-19 06:59:53,190 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-19 06:59:53,191 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 06:59:53,191 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 06:59:53,191 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-19 06:59:53,191 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-19 06:59:53,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_62 [2022-11-19 06:59:53,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_62 [2022-11-19 06:59:53,192 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 06:59:53,192 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 06:59:53,192 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 06:59:53,192 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 06:59:53,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:59:53,193 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx [2022-11-19 06:59:53,193 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx [2022-11-19 06:59:53,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 06:59:53,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 06:59:53,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61___0 [2022-11-19 06:59:53,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61___0 [2022-11-19 06:59:53,194 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2022-11-19 06:59:53,194 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2022-11-19 06:59:53,194 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_start_rxtx [2022-11-19 06:59:53,194 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_start_rxtx [2022-11-19 06:59:53,194 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 06:59:53,195 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 06:59:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_open [2022-11-19 06:59:53,195 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_open [2022-11-19 06:59:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-19 06:59:53,195 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-19 06:59:53,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 06:59:53,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 06:59:53,196 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-19 06:59:53,196 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-19 06:59:53,196 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-19 06:59:53,196 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-19 06:59:53,196 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-19 06:59:53,197 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-19 06:59:53,197 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_start_nway [2022-11-19 06:59:53,197 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_start_nway [2022-11-19 06:59:53,197 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-19 06:59:53,197 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-19 06:59:53,197 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_read_eeprom [2022-11-19 06:59:53,198 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_read_eeprom [2022-11-19 06:59:53,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:59:53,198 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_timer [2022-11-19 06:59:53,198 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_timer [2022-11-19 06:59:53,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 06:59:53,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 06:59:54,448 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:59:54,452 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:59:55,766 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:00:05,462 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 07:00:05,741 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:00:11,309 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:00:11,309 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-19 07:00:11,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:00:11 BoogieIcfgContainer [2022-11-19 07:00:11,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:00:11,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:00:11,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:00:11,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:00:11,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:59:45" (1/3) ... [2022-11-19 07:00:11,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c27d099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:00:11, skipping insertion in model container [2022-11-19 07:00:11,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:59:51" (2/3) ... [2022-11-19 07:00:11,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c27d099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:00:11, skipping insertion in model container [2022-11-19 07:00:11,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:00:11" (3/3) ... [2022-11-19 07:00:11,325 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-tulip.cil.i [2022-11-19 07:00:11,345 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:00:11,346 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-19 07:00:11,459 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:00:11,465 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1930a265, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:00:11,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 07:00:11,478 INFO L276 IsEmpty]: Start isEmpty. Operand has 2631 states, 1546 states have (on average 1.3531694695989651) internal successors, (2092), 1648 states have internal predecessors, (2092), 951 states have call successors, (951), 133 states have call predecessors, (951), 132 states have return successors, (944), 898 states have call predecessors, (944), 944 states have call successors, (944) [2022-11-19 07:00:11,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-19 07:00:11,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:11,500 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:11,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:00:11,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:11,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1176932958, now seen corresponding path program 1 times [2022-11-19 07:00:11,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:11,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840453710] [2022-11-19 07:00:11,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:11,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:13,084 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-19 07:00:13,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:13,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840453710] [2022-11-19 07:00:13,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840453710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:13,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:13,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:00:13,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884743297] [2022-11-19 07:00:13,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:13,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:13,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:13,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:13,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:13,142 INFO L87 Difference]: Start difference. First operand has 2631 states, 1546 states have (on average 1.3531694695989651) internal successors, (2092), 1648 states have internal predecessors, (2092), 951 states have call successors, (951), 133 states have call predecessors, (951), 132 states have return successors, (944), 898 states have call predecessors, (944), 944 states have call successors, (944) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 07:00:19,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:00:21,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:21,501 INFO L93 Difference]: Finished difference Result 7598 states and 11694 transitions. [2022-11-19 07:00:21,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:21,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 151 [2022-11-19 07:00:21,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:21,563 INFO L225 Difference]: With dead ends: 7598 [2022-11-19 07:00:21,564 INFO L226 Difference]: Without dead ends: 4983 [2022-11-19 07:00:21,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:21,594 INFO L413 NwaCegarLoop]: 4384 mSDtfsCounter, 3590 mSDsluCounter, 3492 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3590 SdHoareTripleChecker+Valid, 7876 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:21,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3590 Valid, 7876 Invalid, 918 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 910 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-19 07:00:21,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4983 states. [2022-11-19 07:00:22,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4983 to 4968. [2022-11-19 07:00:22,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4968 states, 2923 states have (on average 1.3445090660280534) internal successors, (3930), 3114 states have internal predecessors, (3930), 1785 states have call successors, (1785), 258 states have call predecessors, (1785), 257 states have return successors, (1781), 1694 states have call predecessors, (1781), 1781 states have call successors, (1781) [2022-11-19 07:00:22,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4968 states to 4968 states and 7496 transitions. [2022-11-19 07:00:22,223 INFO L78 Accepts]: Start accepts. Automaton has 4968 states and 7496 transitions. Word has length 151 [2022-11-19 07:00:22,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:22,226 INFO L495 AbstractCegarLoop]: Abstraction has 4968 states and 7496 transitions. [2022-11-19 07:00:22,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 07:00:22,227 INFO L276 IsEmpty]: Start isEmpty. Operand 4968 states and 7496 transitions. [2022-11-19 07:00:22,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-19 07:00:22,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:22,247 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:22,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:00:22,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:00:22,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:22,251 INFO L85 PathProgramCache]: Analyzing trace with hash -246303524, now seen corresponding path program 1 times [2022-11-19 07:00:22,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:22,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45108150] [2022-11-19 07:00:22,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:22,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-19 07:00:23,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:23,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45108150] [2022-11-19 07:00:23,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45108150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:23,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:23,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:00:23,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106468967] [2022-11-19 07:00:23,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:23,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:23,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:23,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:23,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:23,292 INFO L87 Difference]: Start difference. First operand 4968 states and 7496 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 07:00:31,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:00:31,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:31,644 INFO L93 Difference]: Finished difference Result 11019 states and 16647 transitions. [2022-11-19 07:00:31,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:31,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 159 [2022-11-19 07:00:31,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:31,690 INFO L225 Difference]: With dead ends: 11019 [2022-11-19 07:00:31,691 INFO L226 Difference]: Without dead ends: 6078 [2022-11-19 07:00:31,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:31,722 INFO L413 NwaCegarLoop]: 4119 mSDtfsCounter, 2642 mSDsluCounter, 3468 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2642 SdHoareTripleChecker+Valid, 7587 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:31,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2642 Valid, 7587 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 940 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2022-11-19 07:00:31,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6078 states. [2022-11-19 07:00:32,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6078 to 6052. [2022-11-19 07:00:32,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6052 states, 3612 states have (on average 1.350498338870432) internal successors, (4878), 3833 states have internal predecessors, (4878), 2126 states have call successors, (2126), 313 states have call predecessors, (2126), 311 states have return successors, (2122), 2019 states have call predecessors, (2122), 2122 states have call successors, (2122) [2022-11-19 07:00:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6052 states to 6052 states and 9126 transitions. [2022-11-19 07:00:32,232 INFO L78 Accepts]: Start accepts. Automaton has 6052 states and 9126 transitions. Word has length 159 [2022-11-19 07:00:32,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:32,234 INFO L495 AbstractCegarLoop]: Abstraction has 6052 states and 9126 transitions. [2022-11-19 07:00:32,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 07:00:32,236 INFO L276 IsEmpty]: Start isEmpty. Operand 6052 states and 9126 transitions. [2022-11-19 07:00:32,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-19 07:00:32,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:32,240 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:32,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:00:32,240 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:00:32,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:32,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2140882725, now seen corresponding path program 1 times [2022-11-19 07:00:32,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:32,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804553181] [2022-11-19 07:00:32,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:32,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:32,727 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-19 07:00:32,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:32,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804553181] [2022-11-19 07:00:32,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804553181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:32,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:32,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:00:32,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517496634] [2022-11-19 07:00:32,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:32,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:32,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:32,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:32,733 INFO L87 Difference]: Start difference. First operand 6052 states and 9126 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 07:00:37,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:00:41,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:41,328 INFO L93 Difference]: Finished difference Result 15526 states and 23377 transitions. [2022-11-19 07:00:41,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:41,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 160 [2022-11-19 07:00:41,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:41,404 INFO L225 Difference]: With dead ends: 15526 [2022-11-19 07:00:41,404 INFO L226 Difference]: Without dead ends: 9501 [2022-11-19 07:00:41,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:41,455 INFO L413 NwaCegarLoop]: 4354 mSDtfsCounter, 3446 mSDsluCounter, 3462 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3446 SdHoareTripleChecker+Valid, 7816 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:41,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3446 Valid, 7816 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 923 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2022-11-19 07:00:41,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9501 states. [2022-11-19 07:00:42,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9501 to 9463. [2022-11-19 07:00:42,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9463 states, 5617 states have (on average 1.3416414456115364) internal successors, (7536), 5966 states have internal predecessors, (7536), 3343 states have call successors, (3343), 503 states have call predecessors, (3343), 500 states have return successors, (3342), 3165 states have call predecessors, (3342), 3339 states have call successors, (3342) [2022-11-19 07:00:42,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9463 states to 9463 states and 14221 transitions. [2022-11-19 07:00:42,895 INFO L78 Accepts]: Start accepts. Automaton has 9463 states and 14221 transitions. Word has length 160 [2022-11-19 07:00:42,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:42,897 INFO L495 AbstractCegarLoop]: Abstraction has 9463 states and 14221 transitions. [2022-11-19 07:00:42,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 07:00:42,897 INFO L276 IsEmpty]: Start isEmpty. Operand 9463 states and 14221 transitions. [2022-11-19 07:00:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-19 07:00:42,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:42,901 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:42,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:00:42,902 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:00:42,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:42,904 INFO L85 PathProgramCache]: Analyzing trace with hash 632272849, now seen corresponding path program 1 times [2022-11-19 07:00:42,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:42,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29356771] [2022-11-19 07:00:42,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:42,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:43,510 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-19 07:00:43,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:43,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29356771] [2022-11-19 07:00:43,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29356771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:43,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:43,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:00:43,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47230245] [2022-11-19 07:00:43,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:43,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:43,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:43,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:43,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:43,515 INFO L87 Difference]: Start difference. First operand 9463 states and 14221 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:00:50,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:00:51,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:51,412 INFO L93 Difference]: Finished difference Result 26392 states and 39622 transitions. [2022-11-19 07:00:51,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:51,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 165 [2022-11-19 07:00:51,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:51,541 INFO L225 Difference]: With dead ends: 26392 [2022-11-19 07:00:51,541 INFO L226 Difference]: Without dead ends: 16956 [2022-11-19 07:00:51,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:51,595 INFO L413 NwaCegarLoop]: 4475 mSDtfsCounter, 3620 mSDsluCounter, 3491 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3620 SdHoareTripleChecker+Valid, 7966 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:51,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3620 Valid, 7966 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 949 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-11-19 07:00:51,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16956 states. [2022-11-19 07:00:53,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16956 to 16911. [2022-11-19 07:00:53,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16911 states, 10014 states have (on average 1.3377271819452765) internal successors, (13396), 10654 states have internal predecessors, (13396), 5978 states have call successors, (5978), 921 states have call predecessors, (5978), 916 states have return successors, (5980), 5647 states have call predecessors, (5980), 5974 states have call successors, (5980) [2022-11-19 07:00:53,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16911 states to 16911 states and 25354 transitions. [2022-11-19 07:00:53,182 INFO L78 Accepts]: Start accepts. Automaton has 16911 states and 25354 transitions. Word has length 165 [2022-11-19 07:00:53,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:53,183 INFO L495 AbstractCegarLoop]: Abstraction has 16911 states and 25354 transitions. [2022-11-19 07:00:53,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:00:53,184 INFO L276 IsEmpty]: Start isEmpty. Operand 16911 states and 25354 transitions. [2022-11-19 07:00:53,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-19 07:00:53,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:53,189 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:53,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:00:53,190 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:00:53,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:53,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1811189397, now seen corresponding path program 1 times [2022-11-19 07:00:53,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:53,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228929782] [2022-11-19 07:00:53,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:53,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-19 07:00:53,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:53,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228929782] [2022-11-19 07:00:53,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228929782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:53,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:53,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:00:53,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826701629] [2022-11-19 07:00:53,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:53,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:53,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:53,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:53,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:53,845 INFO L87 Difference]: Start difference. First operand 16911 states and 25354 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-19 07:01:00,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:01:01,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:01,868 INFO L93 Difference]: Finished difference Result 47457 states and 71079 transitions. [2022-11-19 07:01:01,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:01:01,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 172 [2022-11-19 07:01:01,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:02,081 INFO L225 Difference]: With dead ends: 47457 [2022-11-19 07:01:02,081 INFO L226 Difference]: Without dead ends: 30573 [2022-11-19 07:01:02,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:01:02,173 INFO L413 NwaCegarLoop]: 4680 mSDtfsCounter, 3631 mSDsluCounter, 3476 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3631 SdHoareTripleChecker+Valid, 8156 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:02,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3631 Valid, 8156 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 960 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-11-19 07:01:02,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30573 states. [2022-11-19 07:01:04,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30573 to 30528. [2022-11-19 07:01:04,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30528 states, 18091 states have (on average 1.3360234370681554) internal successors, (24170), 19244 states have internal predecessors, (24170), 10736 states have call successors, (10736), 1715 states have call predecessors, (10736), 1698 states have return successors, (10770), 10116 states have call predecessors, (10770), 10732 states have call successors, (10770) [2022-11-19 07:01:04,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30528 states to 30528 states and 45676 transitions. [2022-11-19 07:01:04,960 INFO L78 Accepts]: Start accepts. Automaton has 30528 states and 45676 transitions. Word has length 172 [2022-11-19 07:01:04,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:04,966 INFO L495 AbstractCegarLoop]: Abstraction has 30528 states and 45676 transitions. [2022-11-19 07:01:04,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-19 07:01:04,966 INFO L276 IsEmpty]: Start isEmpty. Operand 30528 states and 45676 transitions. [2022-11-19 07:01:04,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-19 07:01:04,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:04,971 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:04,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:01:04,972 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:01:04,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:04,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1813631531, now seen corresponding path program 1 times [2022-11-19 07:01:04,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:04,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818474469] [2022-11-19 07:01:04,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:04,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-19 07:01:05,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:05,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818474469] [2022-11-19 07:01:05,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818474469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:05,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:05,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:01:05,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551740279] [2022-11-19 07:01:05,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:05,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:01:05,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:05,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:01:05,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:01:05,590 INFO L87 Difference]: Start difference. First operand 30528 states and 45676 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:01:13,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:01:15,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:15,738 INFO L93 Difference]: Finished difference Result 89985 states and 135025 transitions. [2022-11-19 07:01:15,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:01:15,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 173 [2022-11-19 07:01:15,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:16,236 INFO L225 Difference]: With dead ends: 89985 [2022-11-19 07:01:16,237 INFO L226 Difference]: Without dead ends: 59484 [2022-11-19 07:01:16,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:01:16,381 INFO L413 NwaCegarLoop]: 4479 mSDtfsCounter, 3621 mSDsluCounter, 3397 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3621 SdHoareTripleChecker+Valid, 7876 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:16,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3621 Valid, 7876 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 923 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-19 07:01:16,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59484 states. [2022-11-19 07:01:20,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59484 to 59416. [2022-11-19 07:01:20,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59416 states, 35285 states have (on average 1.3376789003825988) internal successors, (47200), 37530 states have internal predecessors, (47200), 20826 states have call successors, (20826), 3357 states have call predecessors, (20826), 3302 states have return successors, (21261), 19569 states have call predecessors, (21261), 20822 states have call successors, (21261) [2022-11-19 07:01:21,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59416 states to 59416 states and 89287 transitions. [2022-11-19 07:01:21,145 INFO L78 Accepts]: Start accepts. Automaton has 59416 states and 89287 transitions. Word has length 173 [2022-11-19 07:01:21,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:21,151 INFO L495 AbstractCegarLoop]: Abstraction has 59416 states and 89287 transitions. [2022-11-19 07:01:21,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:01:21,151 INFO L276 IsEmpty]: Start isEmpty. Operand 59416 states and 89287 transitions. [2022-11-19 07:01:21,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-19 07:01:21,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:21,155 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:21,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:01:21,156 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:01:21,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:21,157 INFO L85 PathProgramCache]: Analyzing trace with hash -784490623, now seen corresponding path program 1 times [2022-11-19 07:01:21,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:21,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643798660] [2022-11-19 07:01:21,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:21,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:21,918 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-19 07:01:21,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:21,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643798660] [2022-11-19 07:01:21,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643798660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:21,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:21,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:01:21,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187538631] [2022-11-19 07:01:21,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:21,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:01:21,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:21,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:01:21,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:01:21,922 INFO L87 Difference]: Start difference. First operand 59416 states and 89287 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:01:30,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:01:34,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:34,345 INFO L93 Difference]: Finished difference Result 174434 states and 262220 transitions. [2022-11-19 07:01:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:01:34,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 172 [2022-11-19 07:01:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:35,014 INFO L225 Difference]: With dead ends: 174434 [2022-11-19 07:01:35,014 INFO L226 Difference]: Without dead ends: 115045 [2022-11-19 07:01:35,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:01:35,383 INFO L413 NwaCegarLoop]: 4580 mSDtfsCounter, 3612 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3612 SdHoareTripleChecker+Valid, 8070 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:35,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3612 Valid, 8070 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 972 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-19 07:01:35,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115045 states. [2022-11-19 07:01:43,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115045 to 114976. [2022-11-19 07:01:44,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114976 states, 68242 states have (on average 1.3373435714076376) internal successors, (91263), 72685 states have internal predecessors, (91263), 40322 states have call successors, (40322), 6518 states have call predecessors, (40322), 6409 states have return successors, (41132), 37817 states have call predecessors, (41132), 40318 states have call successors, (41132) [2022-11-19 07:01:45,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114976 states to 114976 states and 172717 transitions. [2022-11-19 07:01:45,534 INFO L78 Accepts]: Start accepts. Automaton has 114976 states and 172717 transitions. Word has length 172 [2022-11-19 07:01:45,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:45,536 INFO L495 AbstractCegarLoop]: Abstraction has 114976 states and 172717 transitions. [2022-11-19 07:01:45,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:01:45,537 INFO L276 IsEmpty]: Start isEmpty. Operand 114976 states and 172717 transitions. [2022-11-19 07:01:45,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-19 07:01:45,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:45,540 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:45,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:01:45,541 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:01:45,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:45,543 INFO L85 PathProgramCache]: Analyzing trace with hash 770154044, now seen corresponding path program 1 times [2022-11-19 07:01:45,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:45,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663800007] [2022-11-19 07:01:45,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:45,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:46,058 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2022-11-19 07:01:46,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:46,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663800007] [2022-11-19 07:01:46,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663800007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:46,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:46,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:01:46,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51985511] [2022-11-19 07:01:46,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:46,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:01:46,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:46,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:01:46,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:01:46,061 INFO L87 Difference]: Start difference. First operand 114976 states and 172717 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20)